<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div style="width: 500px;height: 200px;border: 1px solid red;margin: 0 auto;position: relative">
    <div style="width: 100px;height: 50px;border: 1px solid blue;position: absolute;bottom: 10px;left: 10px">

    </div>
</div>
<div style="width: 500px;height: 200px;border: 1px solid red;margin: 0 auto;position: relative">
    <div style="width: 100px;height: 50px;border: 1px solid blue;position: absolute;bottom: 10px;right: 10px">

    </div>
</div>
<div style="width: 500px;height: 200px;border: 1px solid red;margin: 0 auto;position: relative">
    <div style="width: 100px;height: 50px;border: 1px solid blue;position: absolute;top: 10px;right: 10px">

    </div>
</div>
</body>
</html>